Python Beautiful Soup Url extract from web page

Python Beautiful Soup Url extract from web page

from BeautifulSoup import BeautifulSoup, SoupStrainer
import re
import urllib2

def get_url_content(site_url):
    rt=""
    try:
        request = urllib2.Request(site_url) 
        f=urllib2.urlopen(request)
        content=f.read()
        f.close()
    except urllib2.HTTPError, error:
        content=str(error.read())
    return content

response=get_url_content('http://www.sust.edu/')

for link in BeautifulSoup(response, parseOnlyThese=SoupStrainer('a')):
    if link.has_key('href'):
        print link['href']

Output:

All urls under this link